-
-
Save kryptek/c94b1547bfd7e979f9b7152856f1951e to your computer and use it in GitHub Desktop.
Python implementation of traceroute
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# references: | |
# Learning by doing: Writing your own traceroute in 8 easy steps (Ksplice Blog) | |
# https://blogs.oracle.com/ksplice/entry/learning_by_doing_writing_your | |
import sys | |
import socket | |
def traceroute(dest_addr, max_hops=30, timeout=0.2): | |
proto_icmp = socket.getprotobyname('icmp') | |
proto_udp = socket.getprotobyname('udp') | |
port = 33434 | |
for ttl in xrange(1, max_hops+1): | |
rx = socket.socket(socket.AF_INET, socket.SOCK_RAW, proto_icmp) | |
rx.settimeout(timeout) | |
rx.bind(('', port)) | |
tx = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, proto_udp) | |
tx.setsockopt(socket.SOL_IP, socket.IP_TTL, ttl) | |
tx.sendto('', (dest_addr, port)) | |
try: | |
data, curr_addr = rx.recvfrom(512) | |
curr_addr = curr_addr[0] | |
except socket.error: | |
curr_addr = None | |
finally: | |
rx.close() | |
tx.close() | |
yield curr_addr | |
if curr_addr == dest_addr: | |
break | |
if __name__ == "__main__": | |
dest_name = sys.argv[1] | |
dest_addr = socket.gethostbyname(dest_name) | |
print "traceroute to %s (%s)" % (dest_name, dest_addr) | |
for i, v in enumerate(traceroute(dest_addr)): | |
print "%d\t%s" % (i+1, v) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment